相信市场有效的投资人通常会采取( )。A．主动投资策略B．被动投资策略C．积极投资

阅读理解。

     When people travel in another city or country, they sometimes stay in the homes of the local people.

This is called homestay. It is a great experience because you can meet people from a different country

or city and learn something new about that place. I am Wan Li from China. I came to the UK with my

friends for a short visit. we are living with an English couple, Mr. and Mrs.Green, in the west of London.

They have a wonderful four-bedroom house. This is a new house. It has two bathrooms and a garden

with many beautiful flowers. I have a bedroom of my own.

     There are some shopping centres and restaurants near the house, and the house is close to an under-

ground station. It takes about thirty minutes to get to the centre of London.

     I think a homestay may be a good choice for you if it is your first time to visit abroad. The local people

are friendly and willing to help. If you happen to celebrate the holidays with them, you will get to know

more about western culture and customs.

1. The underlined word homestay in the passage means _____.

A . Stay at home.

B. Stay in the homes of one's friends

C . Stay in the homes of one's relatives

D. Stay in the homes of the local people.

2. Wan Li and his friends live with _____ in London.

A. Mr. and Mrs. Bush

B. Mr. and Mrs. Green

C. Mr. and Mrs.

D. Mr. and Mrs. Brown

3. There is _____ near the house.

A. a bus station

B. an underground station

C. a train station

D. an airport

4. How long does it take Wan Li to get to the centre of London from the west of London?

A. Thirty minutes.

B. Thirteen minutes.

C. Twenty minutes.

D. Forty minutes.

5. When travelers to the Great Britain happen to celebrate the holidays with the local people they will

learn more about _____.

A. western culture and customs

B. world culture and customs

C. eastern culture and customs

D. southern culture and customs

（11分）A、B、C、D、E五种短周期主族元素，原子序数依次增大，A原子的最外层上有4个电子；B的阴离子和C的阳离子具有相同的电子层结构，两元素可形成两种固体，其中一种是淡黄色的固体X，D的L层电子数等于K、M两个电子层上的电子数之和。

（1）A元素在元素周期表中的位置        ，D的阴离子结构示意图          ，E的最高价氧化物对应的水化物是_______（填化学式）。

（2）B的氢化物沸点比D的氢化物沸点高，原因是                      。

（3）物质X的电子式     ，它与AB₂反应的化学方程式                        。

（4）实验室制取E单质的离子方程式为____________________________。

最长的支流b是（　　）

A．嘉陵江

B．湘江

C．赣江

D．汉江

以下关于可转换债券转股的做法正确的是( )。

A．转股申请不能撤单

B．转换后的股份可于转股后的下一个交易日上市交易

C．可转换公司债券转股的最小单位为一股

D．可转换公司债券在自愿申请转股期内，债券交易不停市

四格表X²检验，当n≥40，且1≤T＜5时，校正X²=4.89与未校正X²值相比，可使

A．P值减小
B．P值增大
C．P值等于1
D．P值不变
E．P值可能减小或增大